We can offer a few suggestions to help you find suitable breeding cages for your Cockatiels and Macaws.
For the cockatiels, although you said you wanted six individual cages for the six breeding pair my wife take a look at this cage from HQ
The Bird Aviary & Stand for Finch to Conure 32 x 21 by HQ 13221 is well suited to your needs in that you could probably put 4 -6 cockatiels in this cage. The cage has breeder box doors on two sides. The stand is included for the affordable price which offers a shelf for storing your breeder needs. The cage is also ideal for housing your birds once they become adults
Another suggestion would be the 30″ Divided Breeder Cage – 3 Pack – Prevue FO630 Black
This cage can be used on an optional shelving unit (see below) that has casters helping to maximize your space
As you can see from the picture three cages can go on this cage stand
Lastly, one of our favorite breeding units is the Divided Double Breeder Bird Cage on Stand HQ14020
As you can see this is actually two cages stacked on top of each other with a stand providing new four distinct “cells” which allows you to house four breeding pairs. You can order these cages without the stand and stick them three high if you’re looking to save money and room.
You also asked about a breeding cage for macaws we would ask you to consider the Divided Parrot Cage for Large Birds HQ 36432 it’s big enough to for two large Macaws and has a removable divider they can be used to separate the male and female. it also has two nest box stores which makes it ideally suited for breeding large birds.
Please let me know if we can answer any further questions. Thank you for contacting Windy City Parrot